Winding Resistance And Turns Ratio Integrated Tester

In the manufacturing process of transformers, including semi-finished product testing, factory tests for finished products, installation, overhauls, tap changer adjustments, handover tests, and preventive tests as required by the power department, it is necessary to measure the DC resistance and transformation ratio of the transformer. This testing can check the welding quality of winding joints, detect inter-turn short circuits in the winding, verify the contact quality of each position of the voltage tap changer, and ensure that the actual position of the tap changer aligns with the indicated position. It also helps identify issues like stock breaks.

Traditional testing methods require multiple wiring setups and interval tests using two separate instruments, which is time-consuming and inefficient, significantly delaying production progress.

To address the need for faster measurements of DC resistance and transformation ratios in transformers, our company has developed the HZ2162 DC Resistance and Transformer Turns Ratio Integrated Tester. This instrument features a one-time wiring setup, allowing both the transformation ratio test and high/low six-phase DC resistance tests to be completed without disconnecting the wires. All functions can be easily accessed and operated through a touch screen.